Issue #31 Feb 15, 1968 Issue #32 Apr 16, 1968 Issue #33 Jun 18, 1968 Issue #34 Aug 15, 1968 Issue #35 Oct 15, 1968 Issue #36 Dec 12, 1968 Issue #37 Feb 13, 1969 Issue #38 Apr 10, 1969 Issue #39 Jun 12, 1969 Issue #40 Aug 12, 1969 Issue #41 Oct 16, 1969 Issue #42 Dec 26, 1972 Issue #43 Feb 27, 1973 Issue #44 Apr 26, 1973 Issue #45 Jan 15, 1976 Issue #46 Mar 11, 1976 Issue #47 May 13, 1976 Issue #48 Jul 08, 1976 Issue #49 Sep 21, 1976 Issue #50 Nov 11, 1976